For test purpose I have the parameters set as follows:
Discount Unit: percentage
Discount Basis: Total Items in Cart
Discount Level 1: $11.00
Discount Amount: 80

My items cost $5.89 and above. When I put any amount above $11 in the shopping cart (i.e. $45 worth of product), it doesn't give a discount in any amount.

It worked the first time only.